//  SuperTux -  A Jump'n Run
//  Copyright (C) 2004 Matthias Braun <matze@braunis.de
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//  
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//  
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <http://www.gnu.org/licenses/>.

#include "math/vector2f.hpp"

#include <iostream>

#include "math/math.hpp"

void
Vector2f::normalize()
{
  float mag = magnitude();
  x /= mag;
  y /= mag;
}

Vector2f Vector2f::unit() const
{
  return *this / magnitude();
}

float
Vector2f::magnitude() const
{
  return Math::sqrt(x*x + y*y);
}

Vector2f
Vector2f::rotate(float angle) const
{
  float len = magnitude();
  return Vector2f(len * Math::cos(angle), len * Math::sin(angle));
}

std::ostream& operator<<(std::ostream& s, const Vector2f& v)
{
  s << "Vector2f(" << v.x << ", " << v.y << ")";
  return s;
}

/* EOF */
